Resettable mileage counting mechanism
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United States of America Patent
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-
Dec 22, 1981
Grant Date -
N/A
app pub date -
Jan 28, 1980
filing date -
Jan 28, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A mileage counter for vehicles that provides signals after predetermined mileage intervals indicating the need for vehicle maintenance. Several different maintenance requirements are signalled at different intervals and after the maintenance on the vehicle has been performed each of the counting functions may be reset independently. The counter consists of a plurality of ascending order counter wheels driven by the vehicle's speedometer drive. Several ratchet wheel and switch counting assemblies are mounted adjacent and driven by the higher order one of the counter wheels. One of these counting assemblies may, for example, provide a signal indicating the need for maintenance after a five thousand mile interval, and another signal after fifty thousand miles. Each of these counting assemblies includes an advancing pawl for the ratchet wheel that moves laterally to reset the wheel after the maintenance has been performed, and a holding pawl that also defines one of the contacts of the switch. Each of the counting assemblies stops advancing indefinitely after its predetermined mileage interval without adversely affecting the operation of the remaining portions of the counter.
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